الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
Purpose of this study is: Evaluation of coronary artery morphology and myocardial perfusion could be achieved by single reproducible non-invasive contrast enhanced CT acquisition using DECT scanners with high sensitivity and specificity as well as high diagnostic accuracy without the need to increase the contrast material or radiation dose.
Methods: The study was done during the period from ”October ,2016” to ”December ,2017”, age ranged from 42 to 73 years old , were 35 patients with CAD diagnosed by cCTA underwent DECT for assessment of myocardial perfusion.
The study included 35 patients (between 42 and 73years of age) referred for DECT myocardial perfusion examination in the Police authority hospitals - radiodiagnosis department in Cairo after diagnosing by cCTA. Each patient included in the study was subjected to full history taking, reviewing medical sheet , cCTA and CT myocardial perfusion examination. Technique was performed using Aquilion one dynamic volume 320 detector rows CT; Toshiba medical system ,Tochigi-ken, Japan.
Results: our study showed significant correlation and good agreement between the findings of DECT myocardial perfusion defects and the findings of stenosis and its degree on cCTA on a segmental basis with 83% sensitivity, 87% specificity, 86% accuracy, 74% positive predictive value and 92% negative predictive value .
Conclusion: DECT myocardial perfusion has high diagnostic as compared to cCTA as the gold reference standard